character: Louis Pasteur
topic: Vaccine Development History
grade: 9
subject: Science
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character: Edward Jenner
topic: Smallpox Vaccine Development
grade: 9
subject: Science
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character: Jonas Salk
topic: Polio Vaccine Development
grade: 9
subject: Science
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character: Albert Calmette
topic: BCG Vaccine Development for Tuberculosis
grade: 9
subject: Science
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